import assert from '../../harness/wrapped-assert';
import * as path from 'path';

export default function() {
  // These testcases are specific to one uncommon behaviour in path module. Few
  // of the functions in path module, treat '' strings as current working
  // directory. This test makes sure that the behaviour is intact between commits.
  // See: https://github.com/nodejs/node/pull/2106

  var pwd = process.cwd();

  // join will internally ignore all the zero-length strings and it will return
  // '.' if the joined string is a zero-length string.
  assert.equal(path.posix.join(''), '.');
  assert.equal(path.posix.join('', ''), '.');
  assert.equal(path.join(pwd), pwd);
  assert.equal(path.join(pwd, ''), pwd);

  // normalize will return '.' if the input is a zero-length string
  assert.equal(path.posix.normalize(''), '.');
  assert.equal(path.normalize(pwd), pwd);

  // Since '' is not a valid path in any of the common environments, return false
  assert.equal(path.posix.isAbsolute(''), false);

  // resolve, internally ignores all the zero-length strings and returns the
  // current working directory
  assert.equal(path.resolve(''), pwd);
  assert.equal(path.resolve('', ''), pwd);

  // relative, internally calls resolve. So, '' is actually the current directory
  assert.equal(path.relative('', pwd), '');
  assert.equal(path.relative(pwd, ''), '');
  assert.equal(path.relative(pwd, pwd), '');
};